背景抑制扩散加权成像(DWIBS)在宫颈癌诊断与分期中的价值

目的：探讨背景抑制扩散加权成像（DWIBS）在宫颈癌术前诊断与分期中的价值。方法：39例宫颈癌患者术前行常规MRI与背景抑制扩散加权成像（DWIBS）检查,所得图像经最大强度投影（MIP）重建,并反相显示。结果：宫颈癌、宫颈周围浸润灶及盆腔转移灶呈明显高信号。MRI常规序列检出宫颈癌38例,DWIBS检出39例;MRI常规序列检出24枚盆腔转移性淋巴结,DWIBS检出32枚。MRI常规序列宫颈癌分期符合率87.2%（34/39例）,MRI常规序列结合DWIBS符合率97.4%（38/39例）。结论：背景抑制扩散加权成像（DWIBS）能直观、敏感地显示宫颈癌及其转移灶,结合MRI常规序列有利于肿瘤分期,应作为宫颈癌重要辅助检查序列。

Value of diffusion weighted imaging with background body signal suppression in diagnosis and staging of uterine cervix cancer

Objective：To investigate the value of diffusion weighted imaging with background body signal suppression （DWIBS） in diagnosis and staging of uterine cervix cancer （UCC）.Methods：39 UCC patients were scanned with routine pelvic MR sequences and DWIBS.The original images of DWIBS were performed using maximum intensity projection and the reconstructed images were displayed using an inverted gray scale.Results：All the tumors and metastatic lymph nodes showed conspicuously high signal in DWIBS.38 cases were detected by routine MRI sequences and 39 cases by DWIBS.28 metastatic lymph nodes of pelvis by routine MRI sequences and 32 by DWIBS.The accurate rating of staging was 87.2% by routine MRI sequences and 97.4% by routine MRI sequences combined with DWIBS.Conclusion：DWIBS can sensitively demonstrate UCC and their metastatic lesions,and its combination with routine MRI sequences is helpful in staging UCC.It should be adopted as an important auxiliary sequence in detecting the UCC.